EAST Anti-Phishing Tool vs FirmGuardian Email Protection: Side-by-Side Comparison (2026)

EAST Anti-Phishing Tool: Free anti-phishing tool for M365 that deploys via a custom CSS file in Entra. built by Eye Security. Core capabilities include Credential phishing protection for Microsoft 365 environments, Custom CSS file deployment via Microsoft Entra Portal, Email-based delivery of installation instructions and CSS file..

FirmGuardian Email Protection: Managed anti-phishing service combining AI detection with human analyst review. built by FirmGuardian. Core capabilities include AI-powered phishing detection and automated quarantine, Human analyst review for low-confidence email classification, Business Email Compromise (BEC) and impersonation protection..

Both serve the Anti-Phishing market but differ in approach, feature depth, and target audience.

EAST Anti-Phishing Tool differentiates with Credential phishing protection for Microsoft 365 environments, Custom CSS file deployment via Microsoft Entra Portal, Email-based delivery of installation instructions and CSS file. FirmGuardian Email Protection differentiates with AI-powered phishing detection and automated quarantine, Human analyst review for low-confidence email classification, Business Email Compromise (BEC) and impersonation protection.

EAST Anti-Phishing Tool is developed by Eye Security. FirmGuardian Email Protection is developed by FirmGuardian. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

EAST Anti-Phishing Tool integrates with Microsoft 365, Microsoft Entra. FirmGuardian Email Protection integrates with Microsoft 365, Google Workspace, Microsoft Teams. Check integration compatibility with your existing security stack before deciding.

EAST Anti-Phishing Tool and FirmGuardian Email Protection serve similar Anti-Phishing use cases: both are Anti-Phishing tools, both cover Microsoft 365. Key differences: EAST Anti-Phishing Tool is Free while FirmGuardian Email Protection is Commercial. Review the feature comparison above to determine which fits your requirements.